一种光纤光栅加速度传感系统
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摘要
研制了一种高精度、低成本适合于地震勘探和矿山安全等工程领域的光纤光栅加速度传感系统。该系统利用加速度改变光纤光栅中心波长的原理工作,可以有效消除温度漂移对动态应变测量的影响。实验结果表明,传感器频响在2~100Hz,灵敏度1.2 pm/με,动态范围达80 dB,是一种较为理想的光纤加速度传感系统。
This paper presents a low-cost high-precision FBG acceleration sensor system,which is applicable to such engineering areas as seismic exploration,mine safety,etc.,which employs acceleration to change the central wavelength of FBG,and which can effectively eliminate the effect of temperature drift on the measurement of dynamic strain.The results show that the sensor whose frequency response range is 2～100 Hz,whose sensitivity is 1.2 pm / με,and whose dynamic range is 80 dB,is an expected fiber acceleration sensor.
This paper presents a low-cost high-precision FBG acceleration sensor system,which is applicable to such engineering areas as seismic exploration,mine safety,etc.,which employs acceleration to change the central wavelength of FBG,and which can effectively eliminate the effect of temperature drift on the measurement of dynamic strain.The results show that the sensor whose frequency response range is 2～100 Hz,whose sensitivity is 1.2 pm / με,and whose dynamic range is 80 dB,is an expected fiber acceleration sensor.
引文
[1]孙盛和,王廷云.光纤测量与传感技术[M].哈尔滨:哈尔滨工业大学出版社,2002:102-125.
[2]阎利琴,光纤光栅地震检波器解调系统的研究[D].天津:天津工业大学硕士学位论文,2006.
[3]盛秋琴,施可彬,高立模,光纤光栅振动传感的匹配检测方法研究[J].光学学报,2002,22(7):847-851.
[4]刘瑞复,光纤传感器及其应用[M].北京:机械工业出版社,1987:34-56.
[5]CHANGJ,MAL,LIUT,et al.Fiber Optic Vibration Sensor Based on Over Coupled Fused Coupler[C]//Proceedings of SPIE2006,6595:6595C-1-6.
[6]LIUT,FERNANDOGF,et al.Simultaneous Strain and Temperature Measurements Using a Multiplexed Fiber Bragg Grating Sensor and anExtrinsic Fabry-Perot Sensor[J].Smart Struct Mater,1998(7):550-556.
[2]阎利琴,光纤光栅地震检波器解调系统的研究[D].天津:天津工业大学硕士学位论文,2006.
[3]盛秋琴,施可彬,高立模,光纤光栅振动传感的匹配检测方法研究[J].光学学报,2002,22(7):847-851.
[4]刘瑞复,光纤传感器及其应用[M].北京:机械工业出版社,1987:34-56.
[5]CHANGJ,MAL,LIUT,et al.Fiber Optic Vibration Sensor Based on Over Coupled Fused Coupler[C]//Proceedings of SPIE2006,6595:6595C-1-6.
[6]LIUT,FERNANDOGF,et al.Simultaneous Strain and Temperature Measurements Using a Multiplexed Fiber Bragg Grating Sensor and anExtrinsic Fabry-Perot Sensor[J].Smart Struct Mater,1998(7):550-556.
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